Windshield defroster attachment



Aug. 24, 1943. M. P. MARONG 2,327,917

WINDSHIELD DEFROSTER ATTACHMENT Filed Nov. 21, 1941 2 Sheets-Sheet l Tiffy-.

xl Harney Aug. 24, 1943. M. P. MARONG WINDSHIELD DEFROSTER ATTACHMENT Filed Nov. 2l, 1941 2 Sheets-Sheet 2 A tioruey w Patented Aug. v24, 1.943

My inventionrelatestcimemremntSin-meees for @frosting thefwindshielde svt-mQtQrfyehileS, and particularly. to aA defrostingfarrangement which may `belattacvhed singlyorgin pairs t ture, Surrounding the .Windshield-1295i .be .si .sied or selected `.portions thereof,'fwherebyV 4selected portions of Athe windshieldlrnay the will of the driver` b-y 'adjustment of `parte.,of the defrosting arrangement, andsthepriniaryvb ject of rnyinvention is tdprovide:aisiniple and eiiicient arrangement ,oft the character indicated,

Other'.irnporta/nt objeets"anLady/'antagesV of vmy invention` Willflbef appareritfffrorn "a vreading. yof the following.descriptiontaken in vcon'riection with theD appended'V `drawings;'wherein 4for 'puru bddiments of Inyirivention. A i Inthedrawir'i'gsfy E i i "Figure 1 is a fragmentary" transvei'severtical sectional View taken through the drivin'gmconfipartmentfofi an ,automobile looking toward the poses' of illustrationvl have shownprferred ernwindshield and the instrument panel thereof, and" showing a dual arrangement in accordance with the present invention detachably mounted on the instrument panel.

Figure 2 is an enlarged fragmentary transverse vertical sectional view taken through Figure I along the line 2 2 and looking toward the left in the direction of the arrows.

Figure 3 is an elevational View of a single arrangement in accordance with the present invention, partly broken away to show internal structure.

Figure 4 is a fragmentary transverse vertical sectional view taken through Figure 3 along the line lilooking toward the right in the direction of the arrows.

Figure 5 is a perspective View of one of the valved heater hose adapters.

Figure 6 is a fragmentary horizontal sectional view taken through Figure 2 along the line G--i and looking downwardly in the direction of the arrows. f

middle orA other' suitabale. .place `on its underside `or bottom, and equipped with a suction cup l to enablerelatively V.securely mounting thebody Cil Figure 'l is a perspective View of a modified form of defroster arm having a telescopically eX- tensible construction enabling desirably lengthening or shortening the arm to reach to different portions of the windshield to be defrosted,

Referring in detail tov the drawings, the nuonza selected portionof the upper part S ofthe instrument panel 9 of thenautomobiletothe-rear of the windshield I0. For appearance Aand for avoidanceA of sharp'corners the yfront longitudinal sideofgthe-vbodyj maybe rounded as indicated by.v the. numeral; It.; rlfheb ralclgiet 6 involvesl a threaded shank 2..tereadeb1e either the weer or lower sockets -I 3.A :formed in-the topzand bottom,.re spectively,of 4the body 5 `as indicatedin Figure? -of the. drawings, in accordance with the @Sitios imprimeeftlisibody .Sie mounted 'Obf Viouslyinxihe dual @rlangment .ShQWn' in Figure l ofi-,the drawingsoneof the bodies .I'nust be obverted `to achieve-the desired.-psitio11, and in this case, thesuction cpibrackets are changed inlpositionwlx ."Il'ie` brackets "6 are `.desirably. o1 hinged -Icharaclterv to enablev adequate vadjustment f'lth'e windshield lo.

A preferably although not necessarily cylindrical hot air passage I4 is formed in the body 5 from the end I5 thereof to Within a certain disu tance of the opposite `end I6 thereof, the passage |14 being located nearer the rear or rounded side II. of the body, with longitudinally spaced lat `eral branches I'I and I8 leading from the passage I4 through 'the front side I9 of the body. The outer end of the Apassage I4 is provided with bayonets 2li which are engageable with bayonet slots 2| formed in the inner end of the valved adapter which is generally designated 22 and which is arranged to be suitably coupled as indicated at 23 to the hot air pipe 2Q leading from the heater or other source of defrosting air. In

the case of the single arrangement, the coupling 4 `23 would directly connect the pipe 2A with the adapter 22. However, in the dual arrangement shown in Figure lof the drawings, a T-tting 25 is applied, with the vertical arm of which the pipe 24 is connected, the ends of the 4cross arm being connected by couplings 23 withfthe adapters 22, so that both defrosting arrangements arel properly supplied with hot defrosting air from the pipe 24.

` The adapter 22 is provided with diametrically opposed holes 26 Whichreceive a bolt or shaft 21 on which is secured a buttery valve 28 which is adapted tobe positioned acrossthe bore of the adapter 22 to partially or wholly shut on' 'the passage `of defrosting air therethrough, and thereby control the defrosting action of the attachment; -A coil spring 29 may be disposed on of the bodyiny acc'o'rd'ek.rlce` withfthe angulation the shaft 21 between a stop 30 and the side of the adapter to give desired retaining tension to the bolt or shaft, and the opposite end of the shaft is provided with an operating knob 3| having suitable indicating means to show the position of the valve in the adapter.

f The branch passages I1 and I8 are substan-` tially cylindrical in form to rotatably receive the 32 is a disk or button 35 having a conformably vf shaped under surface to avoid abrading the terminal 32, the element 35 being pressed downwardly by a spring 36 compressed by a vertically adjustable cross member 31, which is adjustable relative to the body 5 by a'bolt 38 which-traverses the middle of the cross member and threads into the body 5 between the passage branches I'I and I8 as particularly well indicatedin-Figures 4 and 6. By adjusting the bolt or screw 38- the pressure of the disks 35 on the vterminalsof the defroster arms may be adjusted to either free the arms for adjustment or to lock the same'in adjusted position. v

The defroster-farms comprise preferably rectangular cross section tubes with longitudinal slots 39 formed in the forward and inwardcorners thereof, whereby the defrosting'air escaping through these slots is di :'ected toward the inner side'of the Windshield Il infront ofthe arms and laterally toward eacli other, with respect to the defrosting arms. In one'form of the defrosting arm the upper end is provided with a cap 4S held in placeby a set screwy 4 I AIn another form of defroster arm the body ofthe armis telescopic in form, the sections being arranged to `be clamped in 'adjusted relation by a set 4screw 42 as indicated in Figure 7 of the drawings, thecap 40a in this arrangement being placed on the upper section 43 and held in place by a setscrew 4Ia, so that the arm can be lengthened to reach and traverse any desired portion of the windshield to the extent that thel arm is capable of reaching. As indicated in the drawings lugs 44 may reach across the slot 39 at suitable intervals to keep the tubes from spreading.

Although I have shown and described herein the preferred embodiments of my invention, it is to befunderstood ythat I do notv wish to limit the applicationof the inventionth'ereto` except as may be required by the scope of the subjcined (claim.

`Having described th invention, what is claimedasnew'is: f A Ywindshield defroster for of the instrument panel of an automobile and connection to a hot air pipe upstanding alongside the central portion of said panel, said defroster comprising an elongated substantially rectangular hollow block having open and closed ends, respectively, they open .end formingan inlet facing saidvwindshield, a pair fof tubular slotted defroster arms having right angled hot air inlet ends journaled in said apertures, respectively,

for swinging adjustment of said arms' into `upj standing position relative to'said rblock 'and alongside said windshield when the block is attached uponeither side of said pipe, means to connect the open end of said block to `said pipe from either side of ythe pipe, and releasabley means carried by said block'to frictionally lock said right angled ends of said arms in said pair of apertures.

MICHAEL P. MARONG.'v4

attachment on top l 

